I was just curious if anyone here knew more about Mather's later years.I've read several things alluding to him becoming more of a hermit and actingstrangely. That's all speculation though, are there any more direct sources regardingwhat happened after the GD fiasco? Particularly regarding the order Alpha et Omega?

There's a fair bit about they time. Going from memory, Sword of Wisdom is one of the more sympathetic (but a lot of its non-Mathers details are wrong). There probably is a fair bit in Women of the Golden Dawn, but not remembering it precisely. Crowley has more than a little in Confessions.